Phylum Proteobacteria, Class Betaproteobacteria, Order Burkholderiales, Family Alcaligenaceae, Genus Oligella, Oligella urethralis
(Lautrop et al. 1970) Rossau et al. 1987. Type species of the genus.
Basonym: Moraxella urethralis Lautrop et al. 1970.
Gram-negative small rods, mostly not exceeding 1 μm and often occurring in pairs;
they lack the typical plumpness of moraxellae. Non-spore-forming. Noncapsulated.
Colonies on blood agar develop slowly and are more overtly white than those of all
recognized species of Moraxella. No pigments and no odor are produced.
Aerobe. Grows at 30, 37 and 42ºC. No growth on p-hydroxybenzoate. Grows in the
presence of up to 3% NaCl, and on Drigalski agar.
Isolated from human urine, genitourinary tract, and ear. Usually susceptible to penicillin.
Undetermined. Pathogenicity is probably low.
- R. Rossau, K. Kersters, E. Falsen, E. Jantzen, P. Segers, A. Union, L. Nehls, and J. De Ley. Oligella, a New Genus Including
Oligella urethralis comb. nov. (Formerly Moraxella urethralis) and Oligella ureolytica sp. nov. (Formerly CDC Group IVe):
Relationship to Taylorella equigenitalis and Related Taxa. Int J Syst Bacteriol July 1987 37:198-210.
Positive results for catalase, nitrite reduction (not nitrate), oxidase, utilization of: acetate,succinate, fumarate, DL-lactate, L-malate,
pyruvate, 2-ketoglutarate, benzoate, L-glutamate & DL-3-hydroxybutyrate .
Negative results for gelatin hydrolysis, H2S production, indole production, nitrate reduction, urease (Christensen's), acetamide
hydrolysis, DN-ase, esculin hydrolysis, starch hydrolysis, Tween 80 hydrolysis; lysine decarboxylase, ornithine decarboxylase,
arginine dihydrolase, acid phosphatase, utilization of: N-acetyl-glucosamhe, amygdalin, D-arabinose, L-arabinose, arbutin,
cellobiose, esculin, D-fructose, D-fucose, L-fucose, D-galactose, gentiobiose, D-gluconate, D-glucosamine, D-glucose, glycogen,
inulin, 2-ketogluconate, 5-ketogluconate, lactose, alpha-lyxose, maltose, D-mannose, rnelezitose, melibiose,
methyl-alpha-D-glucoside, methyl-a-D-mannoside, methyl-beta-D-xyloside, raffinose, L-rhamnose, D-ribose, salicin, L-sorbose,
starch, sucrose, D-tagatose, trehalose, turanose, D- or L-xylose, adonitol, D- or L-arabitol; dulcitol, meso-erythritol, glycerol,
meso-inositol, D-mannitol, sorbitol, meso-xylitol, caprate, caprylate, heptanoate, pelargonate, maleate, malonate, oxalate, glycolate,
adipate, azelate, pimelate, sebacate, suberate, DL-glycerate, D-tartrate & meso-tartrate. Carbohydrates are neither fermented nor
(c) Costin Stoica